I have noticed copper prices by the amount of old wire we put in the scrap bin when we pull new wire at work,the contractors seem to end up with it in the truck never to be seen agin!We don't pull new enless we have to,meg it or ohm it if it's good leave it! With copper prices the thieves can make off with decent money in some industries now.Hey I have a 8'x4'x4' bin full or old wire....I can afford some ball ammo if I strip and sell it!